Slightly worried again now. I haven't made any significant changes to my code. When I'm not using physics, I'm getting 60fps, but as soon as a level with physics is introduced, fps just drops down to 15. It's unusual to think that it was fine a few versions back, and as far as I know, Cocoon hadn't changed during that time.
I'm afraid I'm not very interested in contacting Ludei. Unlike you, they take a very long time to respond to questions, and when they do it's usually "Works fine for us".
I note that you're interested in doing your own Chrome based wrapper. Is there anyway we can help toward that, even help fund that? For example, if you were to start a Kickstarter or even an inhouse donation system, I'd happily throw some money into a pot, and I'm sure some others would too.
Unfortunately, I'm currently not too willing to upgrade to a business license until we have a decent mobile exporter, but I would be willing to buy or pre-order an exporter.